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Merge branch 'linus' into x86/platform, to refresh the branch
[linux.git] / include / net / netns / ipv4.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * ipv4 in net namespaces
4  */
5
6 #ifndef __NETNS_IPV4_H__
7 #define __NETNS_IPV4_H__
8
9 #include <linux/uidgid.h>
10 #include <net/inet_frag.h>
11 #include <linux/rcupdate.h>
12
13 struct tcpm_hash_bucket;
14 struct ctl_table_header;
15 struct ipv4_devconf;
16 struct fib_rules_ops;
17 struct hlist_head;
18 struct fib_table;
19 struct sock;
20 struct local_ports {
21         seqlock_t       lock;
22         int             range[2];
23         bool            warned;
24 };
25
26 struct ping_group_range {
27         seqlock_t       lock;
28         kgid_t          range[2];
29 };
30
31 struct inet_hashinfo;
32
33 struct inet_timewait_death_row {
34         atomic_t                tw_count;
35
36         struct inet_hashinfo    *hashinfo ____cacheline_aligned_in_smp;
37         int                     sysctl_max_tw_buckets;
38 };
39
40 struct netns_ipv4 {
41 #ifdef CONFIG_SYSCTL
42         struct ctl_table_header *forw_hdr;
43         struct ctl_table_header *frags_hdr;
44         struct ctl_table_header *ipv4_hdr;
45         struct ctl_table_header *route_hdr;
46         struct ctl_table_header *xfrm4_hdr;
47 #endif
48         struct ipv4_devconf     *devconf_all;
49         struct ipv4_devconf     *devconf_dflt;
50 #ifdef CONFIG_IP_MULTIPLE_TABLES
51         struct fib_rules_ops    *rules_ops;
52         bool                    fib_has_custom_rules;
53         struct fib_table __rcu  *fib_main;
54         struct fib_table __rcu  *fib_default;
55 #endif
56 #ifdef CONFIG_IP_ROUTE_CLASSID
57         int                     fib_num_tclassid_users;
58 #endif
59         struct hlist_head       *fib_table_hash;
60         bool                    fib_offload_disabled;
61         struct sock             *fibnl;
62
63         struct sock  * __percpu *icmp_sk;
64         struct sock             *mc_autojoin_sk;
65
66         struct inet_peer_base   *peers;
67         struct sock  * __percpu *tcp_sk;
68         struct netns_frags      frags;
69 #ifdef CONFIG_NETFILTER
70         struct xt_table         *iptable_filter;
71         struct xt_table         *iptable_mangle;
72         struct xt_table         *iptable_raw;
73         struct xt_table         *arptable_filter;
74 #ifdef CONFIG_SECURITY
75         struct xt_table         *iptable_security;
76 #endif
77         struct xt_table         *nat_table;
78 #endif
79
80         int sysctl_icmp_echo_ignore_all;
81         int sysctl_icmp_echo_ignore_broadcasts;
82         int sysctl_icmp_ignore_bogus_error_responses;
83         int sysctl_icmp_ratelimit;
84         int sysctl_icmp_ratemask;
85         int sysctl_icmp_errors_use_inbound_ifaddr;
86
87         struct local_ports ip_local_ports;
88
89         int sysctl_tcp_ecn;
90         int sysctl_tcp_ecn_fallback;
91
92         int sysctl_ip_default_ttl;
93         int sysctl_ip_no_pmtu_disc;
94         int sysctl_ip_fwd_use_pmtu;
95         int sysctl_ip_nonlocal_bind;
96         /* Shall we try to damage output packets if routing dev changes? */
97         int sysctl_ip_dynaddr;
98         int sysctl_ip_early_demux;
99         int sysctl_tcp_early_demux;
100         int sysctl_udp_early_demux;
101
102         int sysctl_fwmark_reflect;
103         int sysctl_tcp_fwmark_accept;
104 #ifdef CONFIG_NET_L3_MASTER_DEV
105         int sysctl_tcp_l3mdev_accept;
106 #endif
107         int sysctl_tcp_mtu_probing;
108         int sysctl_tcp_base_mss;
109         int sysctl_tcp_probe_threshold;
110         u32 sysctl_tcp_probe_interval;
111
112         int sysctl_tcp_keepalive_time;
113         int sysctl_tcp_keepalive_probes;
114         int sysctl_tcp_keepalive_intvl;
115
116         int sysctl_tcp_syn_retries;
117         int sysctl_tcp_synack_retries;
118         int sysctl_tcp_syncookies;
119         int sysctl_tcp_reordering;
120         int sysctl_tcp_retries1;
121         int sysctl_tcp_retries2;
122         int sysctl_tcp_orphan_retries;
123         int sysctl_tcp_fin_timeout;
124         unsigned int sysctl_tcp_notsent_lowat;
125         int sysctl_tcp_tw_reuse;
126         int sysctl_tcp_sack;
127         int sysctl_tcp_window_scaling;
128         int sysctl_tcp_timestamps;
129         struct inet_timewait_death_row tcp_death_row;
130         int sysctl_max_syn_backlog;
131
132 #ifdef CONFIG_NET_L3_MASTER_DEV
133         int sysctl_udp_l3mdev_accept;
134 #endif
135
136         int sysctl_igmp_max_memberships;
137         int sysctl_igmp_max_msf;
138         int sysctl_igmp_llm_reports;
139         int sysctl_igmp_qrv;
140
141         struct ping_group_range ping_group_range;
142
143         atomic_t dev_addr_genid;
144
145 #ifdef CONFIG_SYSCTL
146         unsigned long *sysctl_local_reserved_ports;
147         int sysctl_ip_prot_sock;
148 #endif
149
150 #ifdef CONFIG_IP_MROUTE
151 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
152         struct mr_table         *mrt;
153 #else
154         struct list_head        mr_tables;
155         struct fib_rules_ops    *mr_rules_ops;
156 #endif
157 #endif
158 #ifdef CONFIG_IP_ROUTE_MULTIPATH
159         int sysctl_fib_multipath_use_neigh;
160         int sysctl_fib_multipath_hash_policy;
161 #endif
162
163         struct fib_notifier_ops *notifier_ops;
164         unsigned int    fib_seq;        /* protected by rtnl_mutex */
165
166         atomic_t        rt_genid;
167 };
168 #endif
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